Hi,
As i do not have device from what I see initial setup needs to be done by HEOS app and there must be either sticker on device or somewhere in HEOS app to get MAC adderess am/or IP it gets from network. After you have HEOS app connected to Speaker you can use http://www.advanced-ip-scanner.com/ to check if PC you want to use see the speaker then if you right click on MMW player under Choose player you should see HEOS Speaker.